diff --git a/sdk_container/src/third_party/portage-stable/dev-build/meson/Manifest b/sdk_container/src/third_party/portage-stable/dev-build/meson/Manifest
index d63fcd838b..29e6d8caa5 100644
--- a/sdk_container/src/third_party/portage-stable/dev-build/meson/Manifest
+++ b/sdk_container/src/third_party/portage-stable/dev-build/meson/Manifest
@@ -1,5 +1,7 @@
 DIST meson-1.1.1.tar.gz 2125503 BLAKE2B 295b46d19c8a1d64d326a6c826e2abe11d9768902ed2f8816df18677e7f3f58decc0c660925821825ecd9a4955a65bda8b2aa66a7bb1961810d8f78f92a3fd8a SHA512 c6259d73566d2532b87e8a23951363103f7be2aacdf120e50946273a2fed6b1602104a3ffbfda159138ac8f780d2c3e67a6fe2c8c228b73c1266775491797adb
 DIST meson-1.1.1.tar.gz.asc 833 BLAKE2B 165f3a0e8093995e82efcdea78b8cf0d2479505aeec145cf0c4bf3448dd74f0b5d1631e574e7d945d5b5976e11c065043ab0a6efe5646484a5bcd6386050a073 SHA512 004ec7e530ad21b012e461c8d50322295e4ec96a1a3197dbcbeb24b8bd6465a34008541e6fc547e451a50dce53f7ce170ec1bfd8c465ded56a5924e880aa0539
+DIST meson-1.10.0.tar.gz 2412381 BLAKE2B 5344f3e6990618d226038a34b99c2f0d56fd539c17fed8fa51aef6e5389566436040cb223bd8b53709e1552d0d59fde5e77349ecc61540ff2572d6bd74045466 SHA512 4e6ad56e18c7d5b244b94b99c7e42489b8d4e79634abb97607c3f277f74b0c3c1cb043ba48816f444d2960fe96dc38459c404207e415a1401f5fad7c6f5d60e5
+DIST meson-1.10.0.tar.gz.asc 833 BLAKE2B cfbb66ea439bb5993b121d32a72f73588b9ba5085f932ddfa7fe79887cadd8550994af2f01ebf42d9bfe7b9bb3197256affd68c809379bc5085f1ac36453968a SHA512 0bd520d1e3e452e0973b396808bfb6b1f80a13d4e950c33fcb61ef83b7151e10ce9348509700b04d5cedfaa6f6d94ce0972a06d32848e510b186cc4e9c4495fc
 DIST meson-1.2.3.tar.gz 2184484 BLAKE2B 7d76c54bddba249ab97ebd5dd0afc448177ff9fa70812a8ca0cc9fe308c9b145b3fbc3ee068acae0fdc73edff42134b7a0b618cd80a05347a424aca7bc8bbef8 SHA512 cdcadc731effc1ffb2de98b795ba37955f934ed9b54b9f7f3ac5fe96ab33268d4de4fce734a4c2ef7d2ecc5051616df127e1f8665e197ff954310bf1483b81fc
 DIST meson-1.2.3.tar.gz.asc 833 BLAKE2B 1416c49302aab80b5f647cc1d6cd18c36f6199e79c7d13ea284143b2423267b5823850218578626937c14589ebcdf19069b310394c63bc762ab8f59d7ebe3780 SHA512 852c031ecfe032cb48d284bb270597d114294b7d1be5dd0df6ec2f78a62e1a5ba82711bc14ae410e47ced54f99a639055a1628b0acf7aa07a3a80034fce5ebc9
 DIST meson-1.3.2.tar.gz 2223798 BLAKE2B 72b061598a0cb22517460de4df25394a9dfbddb536c5b8e75b7267ae21292fe2a6a3ec16d64aa81cde63d33022decebcc051cf2d87d677f9b40eb2f4106a40cd SHA512 6369c6d64f91c769f0f4d3e2445bb3615785998489d41acba2134b44ec89abd04bd97a3d3d17c64779eb40b0bf4808e3419eb47638169446a98824d680f37a7b
@@ -16,9 +18,13 @@ DIST meson-1.8.5.tar.gz 5056050 BLAKE2B 4f67b140329d3b64dcc213e0c4e65d105dd98e03
 DIST meson-1.8.5.tar.gz.asc 996 BLAKE2B ff8c1ffe8fd8488a00ffcc9d5d0c19dcadfca5216ad8c70daf44526f949c835d775dc558932237a891345e9d900385081ee1d7c76b41237aac423bf72b8f5f7b SHA512 da9ff37ac207dbfbe8bca511e6b8ee233aaaf89653bf00c43d2fed2ecaf0b59b0b11bd4efafa4f87a6f70c8ad11f23834d313c7d1ae07a77baa0d9cfbbe535aa
 DIST meson-1.9.1.tar.gz 5083044 BLAKE2B a4d1894636ee61fa0101153f07d53717d34ba9de620b69becf669e06dc09a85874b4c5d619a509347c97e4112502a431affecccc5faf96464b072b5563247b9e SHA512 e5a167ff035f1494d6b1df7d3bf6feb37aa6421222fd27bfbebb36de4c7c3083e327679b82b7d9d3d4a2cc4dc2a3babb7cbf03358e4a2784d47eb34502014a1c
 DIST meson-1.9.1.tar.gz.asc 992 BLAKE2B 5271c87e19da0f0776c01b1f9f71eef0540e532a9397dbbff3c09c9b3b7698b8ea650f46c8b7edab8e5fd72c1fce4445d556c310770cc23c8275ebf8f06241f6 SHA512 a621781134e4793ea557fd1487895b65a38de23b676a7b6d8d7ac779abcdf768bdf09f933ea7ecedee0cd78fa62ab6319a9108cdf39ffa2e5695cddf183fb903
+DIST meson-1.9.2.tar.gz 2382854 BLAKE2B f099352abbc0fa8d358cbe406955ddf817453cdc244b36f322e11b5b3020013641d162c68c9bce119cf866e8082a14a3f7db9930b66dfba15805afb32440f555 SHA512 3237e55bb8374f65f40dccd8a93493a42fc425337758b8600b377c5e9795a1bdc97942fc19fedd4c3cb697f87c1d54364a637110704a5dc1a391d712be1463bc
+DIST meson-1.9.2.tar.gz.asc 833 BLAKE2B f161b2918c341172de5f141ac367d7d62a60f2d0eadd793f71fb6a19e8944b4ad6bbfbb25d233862066eec8e422295d46e03ce8aca26e1081f2bcb456b7c1057 SHA512 c8cace334e31d5ba3e4f2da687ed945182e3039dc8bbea94015caa82d373c4b4d96a425eccb7617793fd471040705711b00ab37705dcd2070be6ba089586652b
+DIST meson-reference-1.10.0.3 365875 BLAKE2B 2f180158dd31e1bf527947407425d211cf95ab84cd7f4f4c2063036dd46dda4318435b69097d7fae6b812ab402358c438b1d264f1d90716ea471293f70d56e60 SHA512 98f03a9976fee84f9e53987611e524f98d490c6cbe4de652b770e15a3c95cb578ce806b3c17cb75a702f9ee361e20549e2e797692310af8e36177a53e13eec4d
 DIST meson-reference-1.4.2.3 339324 BLAKE2B 1a4fbd8c27a8cfba773777eabd2ebaa0f76ec0c61dcfe1c7b4483737b348ff9528d68f26e68d7d40b2e1875611eed5b9a31c1cf55fed8eabb42fc1e31d9ef14b SHA512 8b8ec43e812599203ec44c08805eb6818485805c45b9c69802261eaa35efc97846a96f6472c6b1ef5f6c703e7153fd957df7b805f173ca3400a2030dfbe002ca
 DIST meson-reference-1.5.2.3 341110 BLAKE2B 0d588b796f7f2da2dcb0e7822acde6a9a461930da4bfead3cf9148fa0fac18cd0ccbc6e891f555c973836f1c16b4eae299908a838a0b6843293de8815d30fc23 SHA512 64715ce2113e362e7d67179fe13566bc8f84ce7f4e6d795b836f42455a871173fee06e3e969e2996022d7e6c9b4b5379587a4c0c3d97b4bca527fb8902d3547f
 DIST meson-reference-1.6.1.3 343730 BLAKE2B 55df822192781a70e4bc44cfe14fb363e3f820406260ca9705d7fdb5fad1bf0117e3f1325d37e58e23477bc075ab6bd84056409355ec694f72eeaa5bf982ecc7 SHA512 553cdcd86a7a600cda05ac970cc285c4c50017d1e7d2925645d7f19a62b34c2f079673cafecf4111aa102afbe9d8e4d56f166d1d9940b740eeec0bb99d6cbc0d
 DIST meson-reference-1.7.2.3 344764 BLAKE2B 82de9a7a01c2f1b45a2b3432deb4713af3cfd3b2dc9af8802488b7d1b86dde9b6ac81f90b144006a79e90b313e1d4d23f9cc90e17255ce9573e5487d3e20c286 SHA512 d482a3b3bed671705d6316e106984ad2c2169fe890349437e512455705ee8dddb31a29d31f44402a4c7c5bd2f78595b75bfc5ad34d8c0337b66f40837b08ee56
 DIST meson-reference-1.8.5.3 345964 BLAKE2B df514085c03c6cd84e31b1ea1aea18d34fdd5aebbcfa3ca96b31ca7dc97c89649f0b26e927288ed71beb3500a46d53cf6c42b740d9a8b3a22d75258cdf99c3c6 SHA512 ef8c4479b13bea4510dd57b0e18a4b86255853885763ae0a2ee19b3e0e846c6619bb6a646d656266650a58bc2afc7b1fa91b05bfc6f8fec9dcd73a7627a369fe
 DIST meson-reference-1.9.1.3 347286 BLAKE2B cae2e9a97bcb7fc6894723156280306ea0fb35d9cbe68d31785ac0678b17b8a4bdfdf2362834b9daf3c01e0ff8dd67c0f1d384595ef4e93858064bdad3e46840 SHA512 d79a772f4fdd55309acda104087d0bbdc707e8fd2816b516daf0b8d1c034892ddb0bec9a383d6f65184e9509a358e2a8b392a484b65ab9d26c0e68a02fd6db95
+DIST meson-reference-1.9.2.3 347286 BLAKE2B ece5e2075e1d1aabe9daf09e8dbdd4c22d0940b957cc61443c9ea0136e54c9f39244cc082f7a784209bb1bb81b116acae74f02501a9cd16df6d06ff9dcda08c0 SHA512 dbf57730e6c6ac6d3ebfba70f4c4b479d8e1a502854343c776f5ba0e9c7a4ba10bf75758b3434dd418041019ab7d704fe1424f49adaf41e260f652b58fd9cb23
diff --git a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.1.1.ebuild b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.1.1.ebuild
index 7d7a6459b3..76850ff975 100644
--- a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.1.1.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.1.1.ebuild
@@ -24,7 +24,7 @@ else
 	VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/jpakkane.gpg
 
 	if [[ ${PV} != *_rc* ]] ; then
-		KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+		KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~arm64-macos ~x64-macos ~x64-solaris"
 	fi
 fi
 
diff --git a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.10.0.ebuild b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.10.0.ebuild
new file mode 100644
index 0000000000..d6479e2e5a
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.10.0.ebuild
@@ -0,0 +1,232 @@
+# Copyright 2016-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{11..14} pypy3_11 )
+DISTUTILS_USE_PEP517=setuptools
+
+inherit shell-completion edo distutils-r1 flag-o-matic toolchain-funcs
+
+if [[ ${PV} = *9999* ]]; then
+	EGIT_REPO_URI="https://github.com/mesonbuild/meson"
+	inherit ninja-utils git-r3
+
+	BDEPEND="
+		${NINJA_DEPEND}
+		$(python_gen_any_dep 'dev-python/pyyaml[${PYTHON_USEDEP}]')
+	"
+
+else
+	inherit verify-sig
+
+	MY_PV=${PV/_/}
+	MY_P=${P/_/}
+	S=${WORKDIR}/${MY_P}
+
+	SRC_URI="
+		https://github.com/mesonbuild/meson/releases/download/${MY_PV}/${MY_P}.tar.gz
+		verify-sig? ( https://github.com/mesonbuild/meson/releases/download/${MY_PV}/${MY_P}.tar.gz.asc )
+		https://github.com/mesonbuild/meson/releases/download/${MY_PV}/meson-reference.3 -> meson-reference-${MY_PV}.3
+	"
+	# Releases may be signed by those listed in Releasing.md. Jussi
+	# remains the default release manager.
+	# https://github.com/mesonbuild/meson/commit/c2d795735fa1c46c54d6aed4d4a30f36a1f853cb
+	BDEPEND="verify-sig? ( >=sec-keys/openpgp-keys-eschwartz-20250723-r1 sec-keys/openpgp-keys-jpakkane )"
+	#VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/eschwartz.asc
+	VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/jpakkane.gpg
+
+	if [[ ${PV} != *_rc* ]] ; then
+		KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~arm64-macos ~x64-macos ~x64-solaris"
+	fi
+fi
+
+DESCRIPTION="Open source build system"
+HOMEPAGE="https://mesonbuild.com/"
+
+LICENSE="Apache-2.0"
+SLOT="0"
+IUSE="test test-full"
+RESTRICT="!test? ( test )"
+REQUIRED_USE="test-full? ( test )"
+
+DEPEND="
+	test? (
+		dev-libs/glib:2
+		>=dev-libs/gobject-introspection-1.82.0-r2
+		app-alternatives/ninja
+		dev-vcs/git
+		virtual/zlib:=[static-libs(+)]
+		virtual/pkgconfig
+		dev-build/cmake
+	)
+	test-full? (
+		|| ( dev-lang/rust dev-lang/rust-bin )
+		dev-lang/nasm
+		>=dev-lang/pypy-3
+		dev-lang/vala
+		dev-python/cython
+		virtual/fortran
+		virtual/jdk
+
+		app-text/doxygen
+		dev-cpp/gtest
+		dev-libs/protobuf
+		dev-util/bindgen
+		dev-util/gtk-doc
+		dev-util/itstool
+		llvm-core/llvm
+		media-libs/libsdl2
+		media-libs/libwmf
+		net-libs/libpcap
+		sci-libs/hdf5[cxx,fortran]
+		sci-libs/netcdf
+		sys-cluster/openmpi[fortran]
+		sys-devel/bison
+		sys-devel/flex
+
+		dev-qt/linguist-tools:5
+		dev-qt/qtwidgets:5
+		dev-qt/qtbase:6[gui,widgets]
+		dev-qt/qtdeclarative:6
+		dev-qt/qttools:6
+		dev-util/gdbus-codegen
+		x11-libs/gtk+:3
+
+		dev-libs/wayland
+		dev-util/wayland-scanner
+	)
+"
+RDEPEND="
+	!<dev-build/muon-0.2.0-r2[man(-)]
+	virtual/pkgconfig
+"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-1.10.0-python-path.patch
+)
+
+src_unpack() {
+	if [[ ${PV} = *9999* ]]; then
+		git-r3_src_unpack
+	else
+		default
+		use verify-sig && verify-sig_verify_detached "${DISTDIR}"/${MY_P}.tar.gz{,.asc}
+	fi
+}
+
+python_prepare_all() {
+	local disable_unittests=(
+		# ASAN and sandbox both want control over LD_PRELOAD
+		# https://bugs.gentoo.org/673016
+		-e 's/test_generate_gir_with_address_sanitizer/_&/'
+		-e 's/test_env_cflags_ldflags/_&/'
+		-e 's/test_c_link_args_and_env/_&/'
+
+		# ASAN is unsupported on some targets
+		# https://bugs.gentoo.org/692822
+		-e 's/test_pch_with_address_sanitizer/_&/'
+
+		# clippy-driver fails, but only when run via portage.
+		#
+		#   error[E0463]: can't find crate for `std`
+		#   error: requires `sized` lang_item
+		-e 's/test_rust_clippy/_&/'
+	)
+
+	sed -i "${disable_unittests[@]}" unittests/*.py || die
+
+	# Broken due to python2 script created by python_wrapper_setup
+	rm -r "test cases/frameworks/1 boost" || die
+	# nvcc breaks on essentially any LDFLAGS
+	# https://bugs.gentoo.org/936757
+	# https://github.com/mesonbuild/meson/issues/11234
+	rm -r "test cases/cuda"/* || die
+
+	distutils-r1_python_prepare_all
+}
+
+python_check_deps() {
+	if [[ ${PV} = *9999* ]]; then
+		python_has_version "dev-python/pyyaml[${PYTHON_USEDEP}]"
+	fi
+}
+
+python_configure_all() {
+	if [[ ${PV} = *9999* ]]; then
+		# We use the unsafe_yaml loader because strictyaml is not packaged. In
+		# theory they produce the same results, but pyyaml is faster and
+		# without safety checks.
+		edo ./meson.py setup \
+			--prefix "${EPREFIX}/usr" \
+			-Dhtml=false \
+			-Dunsafe_yaml=true \
+			docs/ docs/builddir
+	fi
+}
+
+python_compile_all() {
+	if [[ ${PV} = *9999* ]]; then
+		eninja -C docs/builddir
+	fi
+}
+
+src_test() {
+	tc-export PKG_CONFIG
+	if ${PKG_CONFIG} --exists Qt5Core && ! ${PKG_CONFIG} --exists Qt5Gui; then
+		ewarn "Found Qt5Core but not Qt5Gui; skipping tests"
+	else
+		distutils-r1_src_test
+	fi
+}
+
+python_test() {
+	(
+		# meson has its own tests for LTO support. We don't need to verify that
+		# all tests work when they happen to use it. And in particular, this
+		# breaks rust.
+		filter-lto
+
+		# remove unwanted python_wrapper_setup contents
+		# We actually do want to non-error if python2 is installed and tested.
+		remove="${T}/${EPYTHON}/bin:"
+		PATH=${PATH/${remove}/}
+
+		# test_meson_installed
+		unset PYTHONDONTWRITEBYTECODE
+
+		# https://bugs.gentoo.org/687792
+		unset PKG_CONFIG
+
+		# test_cross_file_system_paths
+		unset XDG_DATA_HOME
+
+		# 'test cases/unit/73 summary' expects 80 columns
+		export COLUMNS=80
+
+		# If JAVA_HOME is not set, meson looks for javac in PATH.
+		# If javac is in /usr/bin, meson assumes /usr/include is a valid
+		# JDK include path. Setting JAVA_HOME works around this broken
+		# autodetection. If no JDK is installed, we should end up with an empty
+		# value in JAVA_HOME, and the tests should get skipped.
+		export JAVA_HOME=$(java-config -O 2>/dev/null)
+
+		${EPYTHON} -u run_tests.py
+	) || die "Testing failed with ${EPYTHON}"
+}
+
+python_install_all() {
+	distutils-r1_python_install_all
+
+	insinto /usr/share/vim/vimfiles
+	doins -r data/syntax-highlighting/vim/{ftdetect,indent,syntax}
+
+	dozshcomp data/shell-completions/zsh/_meson
+	dobashcomp data/shell-completions/bash/meson
+
+	if [[ ${PV} = *9999* ]]; then
+		DESTDIR="${ED}" eninja -C docs/builddir install
+	else
+		newman "${DISTDIR}"/meson-reference-${MY_PV}.3 meson-reference.3
+	fi
+}
diff --git a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.2.3.ebuild b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.2.3.ebuild
index 011dddac20..0f224856e4 100644
--- a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.2.3.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.2.3.ebuild
@@ -24,7 +24,7 @@ else
 	VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/jpakkane.gpg
 
 	if [[ ${PV} != *_rc* ]] ; then
-		KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+		KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~arm64-macos ~x64-macos ~x64-solaris"
 	fi
 fi
 
diff --git a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.3.2.ebuild b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.3.2.ebuild
index 80bd92a790..a6f1cf8ebc 100644
--- a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.3.2.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.3.2.ebuild
@@ -24,7 +24,7 @@ else
 	VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/jpakkane.gpg
 
 	if [[ ${PV} != *_rc* ]] ; then
-		KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+		KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~arm64-macos ~x64-macos ~x64-solaris"
 	fi
 fi
 
diff --git a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.4.2.ebuild b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.4.2.ebuild
index cb7e98ccdf..3045d66bbb 100644
--- a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.4.2.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.4.2.ebuild
@@ -33,7 +33,7 @@ else
 	VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/jpakkane.gpg
 
 	if [[ ${PV} != *_rc* ]] ; then
-		KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+		KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~arm64-macos ~x64-macos ~x64-solaris"
 	fi
 fi
 
diff --git a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.5.2.ebuild b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.5.2.ebuild
index 9f3410151f..b3882be5cc 100644
--- a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.5.2.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.5.2.ebuild
@@ -33,7 +33,7 @@ else
 	VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/jpakkane.gpg
 
 	if [[ ${PV} != *_rc* ]] ; then
-		KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+		KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~arm64-macos ~x64-macos ~x64-solaris"
 	fi
 fi
 
diff --git a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.6.1.ebuild b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.6.1.ebuild
index 6374d670b4..f0b7aaf713 100644
--- a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.6.1.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.6.1.ebuild
@@ -33,7 +33,7 @@ else
 	VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/jpakkane.gpg
 
 	if [[ ${PV} != *_rc* ]] ; then
-		KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+		KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~arm64-macos ~x64-macos ~x64-solaris"
 	fi
 fi
 
diff --git a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.7.2.ebuild b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.7.2.ebuild
index 75349bcb25..b49c4b5b84 100644
--- a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.7.2.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.7.2.ebuild
@@ -36,7 +36,7 @@ else
 	VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/eschwartz.asc
 
 	if [[ ${PV} != *_rc* ]] ; then
-		KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+		KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~arm64-macos ~x64-macos ~x64-solaris"
 	fi
 fi
 
diff --git a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.8.5.ebuild b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.8.5.ebuild
index 7f4db2fe71..20b5cab393 100644
--- a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.8.5.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.8.5.ebuild
@@ -37,7 +37,7 @@ else
 	#VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/jpakkane.gpg
 
 	if [[ ${PV} != *_rc* ]] ; then
-		KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+		KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~arm64-macos ~x64-macos ~x64-solaris"
 	fi
 fi
 
diff --git a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.9.1.ebuild b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.9.1.ebuild
index d22327fe5e..f3b1db7732 100644
--- a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.9.1.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.9.1.ebuild
@@ -37,7 +37,7 @@ else
 	#VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/jpakkane.gpg
 
 	if [[ ${PV} != *_rc* ]] ; then
-		KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+		KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~arm64-macos ~x64-macos ~x64-solaris"
 	fi
 fi
 
diff --git a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.9.2.ebuild b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.9.2.ebuild
new file mode 100644
index 0000000000..59d302bd83
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-1.9.2.ebuild
@@ -0,0 +1,232 @@
+# Copyright 2016-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{11..14} pypy3_11 )
+DISTUTILS_USE_PEP517=setuptools
+
+inherit shell-completion edo distutils-r1 flag-o-matic toolchain-funcs
+
+if [[ ${PV} = *9999* ]]; then
+	EGIT_REPO_URI="https://github.com/mesonbuild/meson"
+	inherit ninja-utils git-r3
+
+	BDEPEND="
+		${NINJA_DEPEND}
+		$(python_gen_any_dep 'dev-python/pyyaml[${PYTHON_USEDEP}]')
+	"
+
+else
+	inherit verify-sig
+
+	MY_PV=${PV/_/}
+	MY_P=${P/_/}
+	S=${WORKDIR}/${MY_P}
+
+	SRC_URI="
+		https://github.com/mesonbuild/meson/releases/download/${MY_PV}/${MY_P}.tar.gz
+		verify-sig? ( https://github.com/mesonbuild/meson/releases/download/${MY_PV}/${MY_P}.tar.gz.asc )
+		https://github.com/mesonbuild/meson/releases/download/${MY_PV}/meson-reference.3 -> meson-reference-${MY_PV}.3
+	"
+	# Releases may be signed by those listed in Releasing.md. Jussi
+	# remains the default release manager.
+	# https://github.com/mesonbuild/meson/commit/c2d795735fa1c46c54d6aed4d4a30f36a1f853cb
+	BDEPEND="verify-sig? ( >=sec-keys/openpgp-keys-eschwartz-20250723-r1 sec-keys/openpgp-keys-jpakkane )"
+	#VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/eschwartz.asc
+	VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/jpakkane.gpg
+
+	if [[ ${PV} != *_rc* ]] ; then
+		KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~arm64-macos ~x64-macos ~x64-solaris"
+	fi
+fi
+
+DESCRIPTION="Open source build system"
+HOMEPAGE="https://mesonbuild.com/"
+
+LICENSE="Apache-2.0"
+SLOT="0"
+IUSE="test test-full"
+RESTRICT="!test? ( test )"
+REQUIRED_USE="test-full? ( test )"
+
+DEPEND="
+	test? (
+		dev-libs/glib:2
+		>=dev-libs/gobject-introspection-1.82.0-r2
+		app-alternatives/ninja
+		dev-vcs/git
+		virtual/zlib:=[static-libs(+)]
+		virtual/pkgconfig
+		dev-build/cmake
+	)
+	test-full? (
+		|| ( dev-lang/rust dev-lang/rust-bin )
+		dev-lang/nasm
+		>=dev-lang/pypy-3
+		dev-lang/vala
+		dev-python/cython
+		virtual/fortran
+		virtual/jdk
+
+		app-text/doxygen
+		dev-cpp/gtest
+		dev-libs/protobuf
+		dev-util/bindgen
+		dev-util/gtk-doc
+		dev-util/itstool
+		llvm-core/llvm
+		media-libs/libsdl2
+		media-libs/libwmf
+		net-libs/libpcap
+		sci-libs/hdf5[cxx,fortran]
+		sci-libs/netcdf
+		sys-cluster/openmpi[fortran]
+		sys-devel/bison
+		sys-devel/flex
+
+		dev-qt/linguist-tools:5
+		dev-qt/qtwidgets:5
+		dev-qt/qtbase:6[gui,widgets]
+		dev-qt/qtdeclarative:6
+		dev-qt/qttools:6
+		dev-util/gdbus-codegen
+		x11-libs/gtk+:3
+
+		dev-libs/wayland
+		dev-util/wayland-scanner
+	)
+"
+RDEPEND="
+	!<dev-build/muon-0.2.0-r2[man(-)]
+	virtual/pkgconfig
+"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-1.2.1-python-path.patch
+)
+
+src_unpack() {
+	if [[ ${PV} = *9999* ]]; then
+		git-r3_src_unpack
+	else
+		default
+		use verify-sig && verify-sig_verify_detached "${DISTDIR}"/${MY_P}.tar.gz{,.asc}
+	fi
+}
+
+python_prepare_all() {
+	local disable_unittests=(
+		# ASAN and sandbox both want control over LD_PRELOAD
+		# https://bugs.gentoo.org/673016
+		-e 's/test_generate_gir_with_address_sanitizer/_&/'
+		-e 's/test_env_cflags_ldflags/_&/'
+		-e 's/test_c_link_args_and_env/_&/'
+
+		# ASAN is unsupported on some targets
+		# https://bugs.gentoo.org/692822
+		-e 's/test_pch_with_address_sanitizer/_&/'
+
+		# clippy-driver fails, but only when run via portage.
+		#
+		#   error[E0463]: can't find crate for `std`
+		#   error: requires `sized` lang_item
+		-e 's/test_rust_clippy/_&/'
+	)
+
+	sed -i "${disable_unittests[@]}" unittests/*.py || die
+
+	# Broken due to python2 script created by python_wrapper_setup
+	rm -r "test cases/frameworks/1 boost" || die
+	# nvcc breaks on essentially any LDFLAGS
+	# https://bugs.gentoo.org/936757
+	# https://github.com/mesonbuild/meson/issues/11234
+	rm -r "test cases/cuda"/* || die
+
+	distutils-r1_python_prepare_all
+}
+
+python_check_deps() {
+	if [[ ${PV} = *9999* ]]; then
+		python_has_version "dev-python/pyyaml[${PYTHON_USEDEP}]"
+	fi
+}
+
+python_configure_all() {
+	if [[ ${PV} = *9999* ]]; then
+		# We use the unsafe_yaml loader because strictyaml is not packaged. In
+		# theory they produce the same results, but pyyaml is faster and
+		# without safety checks.
+		edo ./meson.py setup \
+			--prefix "${EPREFIX}/usr" \
+			-Dhtml=false \
+			-Dunsafe_yaml=true \
+			docs/ docs/builddir
+	fi
+}
+
+python_compile_all() {
+	if [[ ${PV} = *9999* ]]; then
+		eninja -C docs/builddir
+	fi
+}
+
+src_test() {
+	tc-export PKG_CONFIG
+	if ${PKG_CONFIG} --exists Qt5Core && ! ${PKG_CONFIG} --exists Qt5Gui; then
+		ewarn "Found Qt5Core but not Qt5Gui; skipping tests"
+	else
+		distutils-r1_src_test
+	fi
+}
+
+python_test() {
+	(
+		# meson has its own tests for LTO support. We don't need to verify that
+		# all tests work when they happen to use it. And in particular, this
+		# breaks rust.
+		filter-lto
+
+		# remove unwanted python_wrapper_setup contents
+		# We actually do want to non-error if python2 is installed and tested.
+		remove="${T}/${EPYTHON}/bin:"
+		PATH=${PATH/${remove}/}
+
+		# test_meson_installed
+		unset PYTHONDONTWRITEBYTECODE
+
+		# https://bugs.gentoo.org/687792
+		unset PKG_CONFIG
+
+		# test_cross_file_system_paths
+		unset XDG_DATA_HOME
+
+		# 'test cases/unit/73 summary' expects 80 columns
+		export COLUMNS=80
+
+		# If JAVA_HOME is not set, meson looks for javac in PATH.
+		# If javac is in /usr/bin, meson assumes /usr/include is a valid
+		# JDK include path. Setting JAVA_HOME works around this broken
+		# autodetection. If no JDK is installed, we should end up with an empty
+		# value in JAVA_HOME, and the tests should get skipped.
+		export JAVA_HOME=$(java-config -O 2>/dev/null)
+
+		${EPYTHON} -u run_tests.py
+	) || die "Testing failed with ${EPYTHON}"
+}
+
+python_install_all() {
+	distutils-r1_python_install_all
+
+	insinto /usr/share/vim/vimfiles
+	doins -r data/syntax-highlighting/vim/{ftdetect,indent,syntax}
+
+	dozshcomp data/shell-completions/zsh/_meson
+	dobashcomp data/shell-completions/bash/meson
+
+	if [[ ${PV} = *9999* ]]; then
+		DESTDIR="${ED}" eninja -C docs/builddir install
+	else
+		newman "${DISTDIR}"/meson-reference-${MY_PV}.3 meson-reference.3
+	fi
+}
diff --git a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-9999.ebuild b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-9999.ebuild
index e9fe46ecf7..d6479e2e5a 100644
--- a/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-9999.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-build/meson/meson-9999.ebuild
@@ -32,11 +32,12 @@ else
 	# Releases may be signed by those listed in Releasing.md. Jussi
 	# remains the default release manager.
 	# https://github.com/mesonbuild/meson/commit/c2d795735fa1c46c54d6aed4d4a30f36a1f853cb
-	BDEPEND="verify-sig? ( sec-keys/openpgp-keys-jpakkane )"
+	BDEPEND="verify-sig? ( >=sec-keys/openpgp-keys-eschwartz-20250723-r1 sec-keys/openpgp-keys-jpakkane )"
+	#VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/eschwartz.asc
 	VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/jpakkane.gpg
 
 	if [[ ${PV} != *_rc* ]] ; then
-		KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+		KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~arm64-macos ~x64-macos ~x64-solaris"
 	fi
 fi